[GlentoranMark (OP)]

I'm watching Time Team, a UK Channel4 production on archaeology.

In the program they are dredging bones up from 30,000 years ago from the middle of the North Sea. While I can understand the area had life 30k years ago, I can't understand how the bones have survived.

The titanic was buried far deeper and had no human remains (afaik) yet North Sea fossilised bones were found by a dredging trawler confuses me.

Can anyone help?

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[Geezer]

I suppose they were buried in sediment before before the sea level rose. The sediment would, presumably, protect them from marine animals.